231404303145 has 16 divisors (see below), whose sum is σ = 370303388352. Its totient is φ = 123396793920.

The previous prime is 231404303107. The next prime is 231404303177. The reversal of 231404303145 is 541303404132.

231404303145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-231404303145 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1075302 + ... + 1272431.

It is an arithmetic number, because the mean of its divisors is an integer number (23143961772).

Almost surely, 2^231404303145 is an apocalyptic number.

It is an amenable number.

231404303145 is a deficient number, since it is larger than the sum of its proper divisors (138899085207).

231404303145 is a wasteful number, since it uses less digits than its factorization.

231404303145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2354312.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 231404303145 its reverse (541303404132), we get a palindrome (772707707277).

The spelling of 231404303145 in words is "two hundred thirty-one billion, four hundred four million, three hundred three thousand, one hundred forty-five".